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B.cpp
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B.cpp
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#include<bits/stdc++.h>
using namespace std;
#define fastio ios_base::sync_with_stdio(false);cin.tie(NULL)
int main()
{
fastio;
int t,n,i,j,k,ara[10005][10],br[10][10005],p=0;
cin>>t;
while(t--)
{
p=0;
cin>>n;
for(i=0; i<n; i++)
{
for(j=0; j<5; j++)
{
cin>>ara[i][j];
br[j][i]=ara[i][j];
}
}
for(i=0; i<5; i++)
{
for(j=i+1; j<5; j++)
{
int x=0,y=0,s=0;
for(k=0; k<n; k++)
{
if(br[i][k]==1 && br[j][k]==1)
s++;
else if(br[i][k]==1)
x++;
else if(br[j][k]==1)
y++;
}
if(x+s>=n/2 && y+s>=n/2 && max(0,n/2-x)+max(0,n/2-y)<=s)
{
p=1;
break;
}
}
if(p==1)
break;
}
if(p==1)
cout<<"YES\n";
else
cout<<"NO\n";
}
return 0;
}